Zhenduo Zhu

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A huge toxic algae bloom in Utah has closed one of the largest freshwater lakes west of the Mississippi river, sickening more than 100 people and leaving farmers scrambling for clean water during some of the hottest days of the year.<p>The bacteria commonly known as blue-green algae has spread rapidly …

Pollution from agriculture and climate change is closing beaches and contributing to dead zones across the country.<p>By now you may have seen the pictures coming out of many of South Florida’s coastal communities: Many miles of smelly, “guacamole-thick” algal blooms cropping up along beaches and …

More than 70% of the watersheds that supply water to China’s 30 largest cities are severely polluted, threatening the water supply for hundreds of millions of people, a recent report finds.<p>The China Urban Water Blueprint, published Monday (Apr. 18) by The Nature Conservancy, analyzed the 135 …

D.C.’s marketplace for stormwater retention credits wasn't taking off, but a new investment could change that.<p>When it rains heavily in D.C., the surrounding ecosystem takes a beating.<p>A full 43 percent of land in the city is impervious to rainwater. As it flows down the streets, it picks up motor …

Plans to build huge dams in the Amazon, Mekong and Congo could devastate freshwater biodiversity in these tropical river basins, say ecologists<p>One third of the world’s freshwater fish are at risk if dozens of large hydroelectric dams are built in the Amazon, Congo and Mekong basins, aquatic …

Plastic trash is found in 90 percent of seabirds. The rate is growing steadily as global production of plastics increases.<p>So much plastic trash is flowing into the oceans that 90 percent of seabirds eat it now and virtually every one will be consuming it by 2050. That finding, revealed in a new …

A river delta is, by definition, a place in flux — coastal land naturally sinks, and is naturally rebuilt by the flow of a vast river that carries in new sediment. Across the globe, from the Amazon to the Nile to the Yangtze, we humans rely on such deltas for the many benefits they bring — access …

NEWARK, N.J. — Amid the flotsam and jetsam of plastic bottles, car tires and other urban debris that litter the lower Passaic River, Hugh Carola, 56, guided a pontoon boat full of visitors through the waterway, whose terminus is a busy port and is lined with heavy industries that once dumped toxic …